CVEvulnerability

CVE-2025-33073

8.8 HIGH Known exploited Published 2025-06-10 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Microsoft Windows SMB Client Improper Access Control Vulnerability — Microsoft Windows

Microsoft Windows SMB Client contains an improper access control vulnerability that could allow for privilege escalation. An attacker could execute a specially crafted malicious script to coerce the victim machine to connect back to the attack system using SMB and authenticate.

Added to KEV
2025-10-20
Remediation due
2025-11-10
Ransomware use
Unknown
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-33073 ; https://nvd.nist.gov/vuln/detail/CVE-2025-33073
Status
Analyzed
Published
2025-06-10
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-284

Description

Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.

Affected configurations

• microsoft windows 10 1507 (< 10.0.10240.21034) • microsoft windows 10 1607 (< 10.0.14393.8148) • microsoft windows 10 1809 (< 10.0.17763.7434) • microsoft windows 10 21h2 (< 10.0.19044.5965) • microsoft windows 10 22h2 (< 10.0.19045.5965) • microsoft windows 11 22h2 (< 10.0.22621.5472) • microsoft windows 11 23h2 (< 10.0.22631.5472) • microsoft windows 11 24h2 (< 10.0.26100.4270) • microsoft windows server 2008 • microsoft windows server 2008 r2 • microsoft windows server 2012 • microsoft windows server 2012 r2 • microsoft windows server 2016 (< 10.0.14393.8148) • microsoft windows server 2019 (< 10.0.17763.7434) • microsoft windows server 2022 (< 10.0.20348.3745) • microsoft windows server 2022 23h2 (< 10.0.25398.1665) • microsoft windows server 2025 (< 10.0.26100.4270)

Related

Weakness · CWE (1)

  • CWE-284 Improper Access Control weakness

References